Dec, 2002
Novel organic crystals with red-violet metallic luster: 1-aryl-2-(2-thienyl)-5-[5-(tricyanoethenyl)-2-thienyl]pyrrole derivatives bearing a heteroatom combined methyl substituent
TETRAHEDRON
- ,
- ,
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- Volume
- 58
- Number
- 51
- First page
- 10225
- Last page
- 10231
- Language
- English
- Publishing type
- DOI
- 10.1016/S0040-4020(02)01354-6
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
A new class of pi-conjugated organic compounds that form crystals with red-violet metallic luster were obtained upon introduction of a heteroatom combined methyl substituent (OMe, SMe, or NMe2) into the para-position of the central N-phenyl group of 1-phenyl-2-(2-thienyl)-5-[5-(tricyanoethenyl)-2-thienyl]pyrrole. The molecule in crystals adopts a heaving ribbon-like molecular arrangement. This is obviously different from the planar arrangement of the gold-like analogues that bear halogen, cyano, or short alkyl group at para-position of the central N-phenyl group. Within the crystal lattice, an intermolecular C-(HN)-N-... hydrogen bond occurs to make the adjacent pi-systems ((CNC)-C-...=C close enough, which is suggested to be responsible for the red-violet metallic color. (C) 2002 Published by Elsevier Science Ltd.
- Link information
- ID information
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- DOI : 10.1016/S0040-4020(02)01354-6
- ISSN : 0040-4020
- CiNii Articles ID : 80015704836
- Web of Science ID : WOS:000179789200016